Re: [PATCH v3 0/6] media: qcom: iris: add support for decoding 10bit formats

[Vikash Garodia <vikash.garodia@oss.qualcomm.com>]

On 5/11/2026 2:50 PM, Neil Armstrong wrote:
> This adds the plumbing to support decoding HEVC, VP9 and AV1
> streams into 10bit pixel formats, linear and compressed.
> 
> This has only been tested on SM8550 & SM8650 with HEVC, and was
> inspired by Venus, DRM MSM and the downstream vidc driver for the
> buffer calculations and HFI messages.
> 
> I was unable to get 10bit decoding working with ffmpeg since P010
> support for v4l2 decoding is missing, but v4l2-ctl works with:
> v4l2-ctl --verbose --set-fmt-video-out=pixelformat=HEVC --set-fmt-video=pixelformat=P010 --stream-mmap --stream-out-mmap --stream-from-hdr Big_Buck_Bunny_1080_10s_30MB_main10.h265.hdr --stream-to out.P010
> v4l2-ctl --verbose --set-fmt-video-out=pixelformat=HEVC --set-fmt-video=pixelformat=Q10C --stream-mmap --stream-out-mmap --stream-from-hdr Big_Buck_Bunny_1080_10s_30MB_main10.h265.hdr --stream-to out.QC10
> 
> The non-10bit decoding still works as before.
> 
> With Big_Buck_Bunny_1080_10s_30MB reencoded in 10-bit profile
> and tranformed in v4l2 header format with [1]:
> ffmpeg -i Big_Buck_Bunny_1080_10s_30MB.h264 -pix_fmt yuv420p10le -c:v libx265 -crf 28 -x265-params profile=main10 Big_Buck_Bunny_1080_10s_30MB_main10.h265
> /path/to/mkhdr.sh Big_Buck_Bunny_1080_10s_30MB_main10.h265 raw Big_Buck_Bunny_1080_10s_30MB_main10.h265.hdr
> 
> Fluster HEVC results on SM8650:
> 
> ./fluster.py run -ts JCT-VC-HEVC_V1 -d GStreamer-H.265-V4L2-Gst1.0 - 131/147
> The failing test case:
> - Pixel Format mismatch
>   - TSUNEQBD_A_MAIN10_Technicolor_2 - Gstreamer waits NV12 but decoder returns P010
> - Unsupported resolution
>   - PICSIZE_A_Bossen_1 - resolution is higher than max supported
>   - PICSIZE_B_Bossen_1 - resolution is higher than max supported
>   - WPP_D_ericsson_MAIN_2 - resolution is lower than min supported
>   - WPP_D_ericsson_MAIN10_2 - resolution is lower than min supported
> - CRC mismatch
>   - RAP_A_docomo_6
> - CRC mismatch - bitstream issue - fails with ffmpeg sw decoder as well
>   - VPSSPSPPS_A_MainConcept_1

 From earlier SOC reports, 10bit tests which were failing were
- DBLK_A_MAIN10_VIXS_4
- INITQP_B_Main10_Sony_1
- TSUNEQBD_A_MAIN10_Technicolor_2
- WP_A_MAIN10_Toshiba_3
- WP_MAIN10_B_Toshiba_3
- WPP_A_ericsson_MAIN10_2
- WPP_B_ericsson_MAIN10_2
- WPP_C_ericsson_MAIN10_2
- WPP_E_ericsson_MAIN10_2
- WPP_F_ericsson_MAIN10_2

I was in the opinion that once we enable 10bit, these tests would pass. 
Though i do not see these in your failing tests, but the count of 
131/147 have not improved. Could you check if these tests are passing 
and count is better than 131 pass ?

Regards,
Vikash